code: def get_flags_opt(self):
      return ["-O4"]
  
file_path: catboost/contrib/python/numpy/py3/numpy/distutils/fcompiler/nag.py
imports: import sys
  import re
  from numpy.distutils.fcompiler import FCompiler
label_desc: Use image node_id 3 for calling the BaseNAGFCompiler obj's underlying member method code with example usage: obj.get_flags_opt() and returns: list